### Commercial Airplane Group 

# 767 Service Bulletin
Number: 767-31-0073 

## Summary Date: October 12, 1995 ATA System: 3141

SUBJECT:INDICATING/RECORDING SYSTEMS - CENTRAL COMPUTERS - INFLIGHT EICAS MAINTENANCE DATA SELECTION SYSTEM INSTALLATION BACKGROUND The change given in this service bulletin will let the EICAS maintenance messages to be shown when the airplane is at or above 10,000 feet. Currently EICAS maintenance messages can be shown only when the airplane is on the ground. This modification will let the EICAS maintenance messages be selected for display when the airplane is at or above 10,000 feet. As part of a service bulletin validation program, this change was completed on airplane VL754 before the release of the service bulletin. Airplane VL754 has the configuration of a Group 4 airplane. ACTION(PRR B12654) - On Groups 1-3 and 6-8 airplanes: install EICAS

enable bypass switch E8 E rack. - Install the altitude pressure switch and pressure

tubing on E8 rack. - Make a modification to the EICAS maintenance

system wiring. COMPLIANCE No compliance time is given. EFFECTIVITY All 767 airplanes line positions 1 -579, 581-589, 591, 592. INDUSTRY SUPPORT INFORMATION Boeing warranty remedies are not available for the configuration changes given in this service bulletin. MANPOWER Airplanes Total Man-hours Elapsed Time (Hours) Groups 1-3 12 10.5 Group 4 9 7.5 Group 5 11 9.5 Groups 6-8 13 11.5 Groups 9-10 9.5 8
MATERIAL INFORMATION Boeing Supplied Kits Refer to Paragraph I.H., Material - Price and Availability.

BOEING COMMERCIAL AIRPLANE GROUP P.O. BOX 3707 SEATTLE, WASHINGTON 98124-2207 Summary Page 1 of 2

### BOEING SERVICE BULLETIN 767-31-0073



### A WIRING MODIFICATION ON GROUPS 1-3, 5 AND
ON GROUPS 1-3,5
P37 PANEL MODIFICATION IN MAKE A WIRING AND 6-8 AIRPLANES

IN E8 RACK MAKE WIRING MODIFICATION INSTALL EICAS ENABLE BYPASS SWITCH ON GROUPS 1-3 AND 6-8 AIRPLANES TUBE ASSEMBLY PRESSURE SWITCH AND INSTALL ALTITUDE 266.5 STA 6-8 AIRPLANES MAKE

FWD MAIN EQUIPMENT CENTER

FWD UP
INBDR41393

Oct 12/95 Summary Page 2 of 2

### Commercial Airplane Group 

# 767 Service Bulletin
Number: 767-31-0073 Date: October 12, 1995 ATA System: 3141

SUBJECT:INDICATING/RECORDING SYSTEMS - CENTRAL COMPUTERS - INFLIGHT EICAS MAINTENANCE DATA SELECTION SYSTEM INSTALLATION I. PLANNING INFORMATION A. Effectivity 1. Airplanes Refer to Service Bulletin Index Document D6-24T001, Part 3 for Airplane Variable Number, Line Number, and Serial Number data. This service bulletin is for the airplanes shown below. An equivalent change is on subsequent production airplanes. Refer to PRR B12654 for data about this change. IDENTIFICATION BY CUSTOMER, CUSTOMER CODE, GROUP AND VARIABLE NUMBER AEROFLOT (ARO)

1 VN561-VN562 AEROMEXICO (AMX)

1 VN556-VN557 AIR ALGERIE (ALG)

7 VK131-VK133 AIR CANADA (ACN)

4 VN931 6 VA701-VA712 VB001-VB002 VB201-VB202 7 VA713-VA719 AIR CHINA GROUP (BEJ)

6 VE064-VE065 7 VE083-VE086 VK161-VK164 AIR EUROPE ITALY SPA (EIY)

1 VN551 4 VN682 VN811-VN812 VN972 AIR FRANCE (AFA)

1 VF101-VF102 VN631 VN632 VN633-VN638 2 VF101 AIR MAURITIUS LTD. (MAU)

3 VF001-VF002

Oct 12/95 767-31-0073 Page 1 of 50

### BOEING SERVICE BULLETIN 767-31-0073 AIR NEW ZEALAND, LTD. (ANZ)

1 VN651-VN656 6 VB323-VB324 VE101-VE103 AIR PACIFIC (APC)

1 VN676 AIR SEYCHELLES LTD. (ASY)

3 VF051 AIR UK (LEISURE) (UKL)

5 VN921-VN922 AIR ZIMBABWE (ZMB)

1 VF061-VF062 AIRTOURS INT'L AVIATION (GUERNSEY) LTD. (GUE)

1 VN951-VN952 ALITALIA (ALI)

1 VN422-VN423 VN425 ALL NIPPON AIRWAYS CO. LTD. (ANA)

1 VN191-VN196 6 VB101-VB121 7 VB122-VB125 VK081-VK112 AMERICAN AIRLINES, INC. (AAL)

1 VN001-VN041 6 VA501-VA515 7 VA516-VA530 ANSETT AUSTRALIA (ANS)

6 VB051-VB055 VB322 ANSETT WORLDWIDE AVIATION SERVICES (AWW)

1 VF092 VN385 ASIANA AIRLINES (AAR)

1 VN546-VN547 3 VL703 VN751-VN753 7 VK141-VK144 AVIANCA (AVI)

4 VN152 7 VE171-VE172 BIRGENAIR (BIR)

6 VE041 BOEING (TBC)

6 VA001 BOULLIOUN AVIATION SERVICES (BOU)

1 VN424

Oct 12/95 767-31-0073 2

### BOEING SERVICE BULLETIN 767-31-0073 BRITANNIA AIRWAYS, INC. (BRI)

6 VB321 7 VB325-VB332 BRITISH AIRWAYS (BAB)

1 VN111-VN127 VN130-VN135 CANADIAN AIRLINES INTERNATIONAL LTD. (CDI)

1 VN051-VN061 CHINA SOUTHERN AIR GROUP (GUN)

1 VN062-VN064 3 VL701-VL702 4 VN813 CONDOR/CARGO TECHNIK GMBH (CDF)

4 VN683-VN691 DELTA AIR LINES, INC. (DAL)

4 VN251-VN266 9 VA301-VA315 VK031-VK056 10 VK032-VK056 EGYPTAIR (EGP)

1 VN211-VN212 6 VE021-VE023 EL AL ISRAEL AIRLINES, LTD. (ELA)

6 VB281-VB284 ETHIOPIAN AIRLINES, CORP. (ETH)

6 VE001-VE002 7 VE003 EVA AIRWAYS CORPORATION (EVA)

1 VN791-VN792 4 VN471-VN472 VN731 7 VB441-VB444 GE CAPITAL AVIATION SERVICES, INC. (GEH)

4 VL751-VL753 GPA GROUP LTD. (GUI)

1 VF161 GULF AIR (GUL)

1 VL003-VL006 VN301-VN314 ITOCHU CORPORATION (CIT)

4 VF181-VF182 JAPAN AIRLINES (JAL)

6 VB371-VB373 VK001 7 VK002-VK015 VK021-VK022 KLM ROYAL DUTCH AIRLINES (KLM)

4 VL891-VL893

Oct 12/95 767-31-0073 3

### BOEING SERVICE BULLETIN 767-31-0073 LAN-CHILE S.A. (LAN)

1 VF091 VF093 VN376 VN531 VN971 8 VE118 LAUDA AIR LUFTFAHRT AG (LAL)

1 VL011 VN242-VN243 VN388 LAUDA AIR S.P.A. (LDI)

4 VN671 LINHAS AEREAS DE MOZAMBIQUE (LAM)

1 VF162 LOT POLISH AIRLINES (LOT)

1 VN291-VN292 3 VF041-VF042 LUFTTRANSPORT SUED AG AND CO. (LTS)

1 VN171-VN173 VN381 MALEV HUNGARIAN AIRLINES (HGA)

3 VF171-VF172 MARTINAIR HOLLAND N.V. (MTH)

4 VN221-VN224 VN672 QANTAS AIRWAYS, LTD. (QAN)

1 VN081-VN095 6 VE061-VE063 VE066-VE068 7 VE069 ROYAL BRUNEI (RBA)

1 VN371-VN372 VN382-VN384 VN386-VN387 SCANDINAVIAN AIRLINES SYSTEM (SAS)

4 VF071 VN151 VN153-VN158 VN163-VN168 SHANGHAI AIRLINES, P.R.C. (SHA)

7 VK171 SOBELAIR (SBL)

1 VN421 SPANAIR (SPP)

1 VN541-VN542 TACA INTERNATIONAL AIRLINES, INC. (TAC)

4 VN732 8 VE116 THE AMEDEO CORPORATION (BRX)

3 VF180 TRANS WORLD AIRLINES, INC. (TWA)

1 VN536-VN537 4 VN681 6 VB301-VB302 9 VA801-VA810

Oct 12/95 767-31-0073 4

### BOEING SERVICE BULLETIN 767-31-0073 TRANSBRASIL AIRLINES INC. (TBL)

1 VL001-VL002 VN532 4 VF072 6 VB251-VB253 VE104 8 VE117 UNITED AIR LINES, INC. (UAL)

1 VN491-VN513 6 VA002-VA020 USAIR, INC. (USA)

8 VE141-VE152 VARIG AIRLINES (VAR)

1 VN231-VN234 8 VE121-VE126 IDENTIFICATION BY VARIABLE NUMBER GROUP 1 VF061-VF062 VF091-VF093 VF101-VF102 VF161-VF162 VL001-VL006 VL011 VN001-VN041 VN051-VN064 VN081-VN095 VN111-VN127 VN130-VN135 VN171-VN173 VN191-VN196 VN211-VN212 VN231-VN234 VN241-VN243 VN291-VN292 VN301-VN314 VN371-VN372 VN376 VN381-VN388 VN421-VN425 VN491-VN513 VN531-VN532 VN536-VN537 VN541-VN542 VN546-VN547 VN551 VN556-VN557 VN561-VN562 VN631-VN638 VN651-VN656 VN676 VN791-VN792 VN951-VN952 VN971 GROUP 2 VF101 GROUP 3 VF001-VF002 VF041-VF042 VF051 VF171-VF172 VF180 VL701-VL703 VN751-VN753 GROUP 4 VF071-VF072 VF181-VF182 VL751-VL753 VL891-VL893 VN151-VN158 VN163-VN168 VN221-VN224 VN251-VN266 VN471-VN472 VN671-VN672 VN681-VN691 VN731-VN732 VN811-VN813 VN931 VN972 GROUP 5 VN921-VN922 GROUP 6 VA001-VA020 VA501-VA515 VA701-VA712 VB001-VB002 VB051-VB055 VB101-VB121 VB201-VB202 VB251-VB253 VB281-VB284 VB301-VB302 VB321-VB324 VB371-VB373 VE001-VE002 VE021-VE023 VE041-VE043 VE061-VE068 VE101-VE104 VK001 GROUP 7 VA516-VA530 VA713-VA719 VB122-VB125 VB325-VB332 VB441-VB444 VE003 VE069 VE083-VE086 VE171-VE172 VK002-VK015 VK021-VK022 VK081-VK112 VK131-VK133 VK141-VK144 VK161-VK164 VK171 GROUP 8 VB401 VE116-VE118 VE121-VE126 VE141-VE152 GROUP 9 VA301-VA315 VA801-VA810 VK031-VK056

Oct 12/95 767-31-0073 5

### BOEING SERVICE BULLETIN 767-31-0073
GROUP 10 VK032-VK056 2. Spares None

Oct 12/95 767-31-0073 6

### BOEING SERVICE BULLETIN 767-31-0073
B. Reason The change given in this service bulletin will let the EICAS maintenance messages to be shown when the airplane is at or above 10,000 feet. Currently EICAS maintenance messages can be shown only when the airplane is on the ground. This modification will let the EICAS maintenance messages be selected for display when the airplane is at or above 10,000 feet. As part of a service bulletin validation program, this change was completed on airplane VL754 before the release of the service bulletin. Airplane VL754 has the configuration of a Group 4 airplane. C. Description - On Groups 1-3 and 6-8 airplanes: EICAS enable bypass switch is installed on E8 E rack. - Altitude pressure switch and pressure tubing are installed on E8 rack. - A wiring modification is made to the EICAS maintenance system. The airplane effectivity is divided in 10 groups because of differences in EICAS rack, EICAS enable bypass switch, pressure tubing and wiring configurations. The changes in this service bulletin will not change the Engine Indication and Crew Alerting System (EICAS) other than enabling in flight display of maintenance pages. D. Compliance No compliance time is given. E. Approval This service bulletin was examined by the Federal Aviation Administration (FAA). The changes specified in this service bulletin comply with the applicable Federal Aviation Regulations (FAR) and are FAA approved. This service bulletin and the FAA approval were based on the airplane in its original Boeing delivery configuration or as modified by other FAA approved Boeing changes. If an airplane has a non-Boeing modification or repair that affects a component or system also affected by this service bulletin, the operator is responsible for obtaining appropriate regulatory agency approval before incorporating this service bulletin. F. Industry Support Information Boeing warranty remedies are not available for the configuration changes given in this service bulletin.

Oct 12/95 767-31-0073 7

### BOEING SERVICE BULLETIN 767-31-0073 G. Manpower The data below shows an estimate of the man-hours necessary to do this modification for each airplane. This estimate is for direct labor only, done by an experienced crew. Adjust the estimate with operator man-hour data if necessary. The estimate does not include lost time. These are some examples of lost time: - Time to adjust to the workplace - Time to schedule the work - Time to examine the work - Time to cure the materials - Time to make the parts - Time to find the tools. Airplanes Task Number of Persons Man-Hours Elapsed Time (Hours) Groups 1-3Open Access 1 0.5 0.5 Change 1 8 8 Close Access 1 0.5 0.5 Test 2 3 1.5 TOTAL FOR EACH AIRPLANE 12 10.5 Groups 4 Change 1 6 6 Test 2 3 1.5 TOTAL FOR EACH AIRPLANE 9 7.5 Group 5 Open Access 1 0.5 0.5 Change 1 7 7 Close Access 1 0.5 0.5 Test 2 3 1.5 TOTAL FOR EACH AIRPLANE 11 9.5 Groups 6-8Open Access 1 0.5 0.5 Change 1 9 9 Close Access 1 0.5 0.5 Test 2 3 1.5 TOTAL FOR EACH AIRPLANE 13 11.5 Groups 9-10Change 1 6.5 6.5 Test 2 3 1.5 TOTAL FOR EACH AIRPLANE 9.5 8

Oct 12/95 767-31-0073 8

### BOEING SERVICE BULLETIN 767-31-0073 H. Material - Price and Availability Boeing can supply the kits shown in Paragraph II.A., Parts Necessary For Each Airplane, as shown below. Kit availability is shown in the Reorder Lead Time (ROLT). ROLT is calculated from the date Boeing gets the purchase order. Kit Number Name ROLT (weeks) Unit Price thru Jun 12/96 015T1461-1 Top Kit (Groups 1 and 2 airplanes) 38 $ 2,799.00 015T1461-2 Top Kit (Group 3 airplanes) 38 $ 2,718.00 015T1461-3 Top Kit (Group 4 airplanes) 38 $ 2,366.00 015T1461-4 Top Kit (Group 5 airplanes) 38 $ 2,523.00 015T1461-5 Top Kit (Groups 6 and 7 airplanes) 28 $3,535.00 015T1461-6 Top Kit (Group 8 airplanes) 28 $ 3,453.00 015T1461-7 Top Kit (Groups 9 and 10 airplanes) 28 $ 3,101.00 The kits are subject to the terms and conditions of the Boeing standard purchase order acknowledgment. After the Price date, new price data is applicable. Prices are in United States Dollars. Terms: Net 30 days. I. Special Tools - Price and Availability None J. Weight and Balance Airplane Change in Weight (Pounds) Change in Moment (Pound-Inches) 767-200 767-300 Groups 1-2 +2.0 +532.0 +290.0 Group 3 +1.8 +478.8 +261.0 Group 4 +1.5 +399.0 +217.5 Group 5 +1.9 - +275.5 Groups 6 and 7 +4.0 +1064.0 +580.0 Group 8 +3.8 +1010.8 - Groups 9 and 10 +3.5 +931.0 +507.5

Oct 12/95 767-31-0073 9

### BOEING SERVICE BULLETIN 767-31-0073
K. References 1. Existing Data: a. Engineering Change Memo PRR B12654 b. 767 Maintenance Manual (AMM) Subjects 25-52-02, 31-41-02, 34-11-00 c. 767 Structure Repair Manual (SRM) Subject 51-70-16 d. 767 Wiring Diagram 31-41-13 e. Boeing Standard Wiring Practices Manual (BSWPM) 20-10-11, 20-10-12 f. Boeing Standard Overhaul Practices Manual (BSOPM) 20-50-02 2. Data supplied with this service bulletin: None L. Publications Changed Publication Chapter-Section 767 Maintenance Manual 31-41 767 Wiring Diagram Manual 31-41 767 Ramp Maintenance Manual 31-01, 31-31 767 Illustrated Parts Catalog 31-41
M. Electrical Load Data Not changed

Oct 12/95 767-31-0073 10

### BOEING SERVICE BULLETIN 767-31-0073
II. MATERIAL INFORMATION A. Parts Necessary For Each Airplane 1. Kits: To get the kits shown below, refer to Paragraph I.H., Material - Price and Availability. NOTE: One top kit and the items shown in Paragraph II.A.2., Parts and Materials Supplied by the Operator, are necessary for each airplane. 015T1461 - TOP KIT, INFLIGHT ACTIVATION OF EICAS MAINTENANCE MESSAGE SYSTEM -1 -2 -3 -4 -5 -6 Quantity Part Number Name - . . . . . 015T1461-1 Top Kit (Groups 1 and 2 airplanes) . - . . . . 015T1461-2 Top Kit (Group 3 airplanes) . . - . . . 015T1461-3 Top Kit (Group 4 airplanes) . . . - . . 015T1461-4 Top Kit (Group 5 airplanes) - . . . - . 015T1461-5 Top Kit (Groups 6 and 7 airplanes)
. -...-015T1461-6 Top Kit (Group 8 airplanes) 1 1 . . 1 1 015T1461-8 Kit, EICAS Maint Enable Bypass Switch Installation 1 1 1 1 1 1 015T1461-9 (a) Kit, Wire Installation 1 1 1 1 . . 233T0044-1 Kit, EICAS Pressure Switch Installation . . . . 1 1 233T0044-2 Kit, EICAS Pressure Switch Installation 1 . . 1 1 . 289T0341-2 Wire Kit . . 1 . . . 289T0341-1 Wire Kit . 1 . . . 1 289T0341-3 Wire Kit 015T1461 - (CONTINUED) -7 -8 -9 Quantity Part Number Name - . . 015T1461-7 Top Kit (Groups 9 and 10 airplanes) . - . 015T1461-8 Kit, EICAS Maint Enable Bypass Switch Installation 1 . - 015T1461-9 (a) Kit, Wire Installation 1 . . 233T0044-2 Kit, EICAS Pressure Switch Installation 1 . . 289T0341-1 Wire Kit . 1 . 284T1038-4 Bracket Assembly . 1 . 405-112 Switch Guard . 1 . BAC27TEX2962 Marker . 1 . BAC27TEX3095 Marker . 3 . BACN10TL3-4 Nutplate . 2 . BACR15BB4AD5 Rivet

Oct 12/95 767-31-0073 11

### BOEING SERVICE BULLETIN 767-31-0073 (Continued) 015T1461 - (CONTINUED) -7 -8 -9 Quantity Part Number Name . 2 . BACR15FT5AD4 Rivet . 1 . ITL187-3 Switch . 4 . NAS1398D4-3 Rivet . . 6 BACC10DK2 Clamp . . 6 NAS1149D0332J Washer . . 6 NAS1801-3-7 Screw . . 1 BACN10GH3-6 Nutplate . . 1 BACN10TL3-3 Nutplate . . 5 BACR15BA3AD3 Rivet . . 1 NAS42DD-6-80 Spacer . . 1 NAS1801-3-26 Screw . . 3 BACR15DR3P2 Rivet . . 3 BACP20BA1 Filler . . 1 1QM1-3-54A Quick Disconnect 233T0044 - KIT, EICAS PRESSURE SWITCH INSTALLATION -1 -2 QuantityPart Number Name - . 233T0044-1 Kit, EICAS Pressure Switch Installation . - 233T0044-2 (a) Kit, EICAS Pressure Switch Installation 1 . 233T9110-1162 Tube Assembly . 1 233T9110-1072 Tube Assembly . 1 233T9110-1073 Tube Assembly . 1 233T9110-1074 Tube Assembly . 1 233T9110-1075 Tube Assembly . 1 233T9110-37 Drain Assembly 1 1 233T9118-105 Bracket Assembly . 3 287T0012-3 Attach Assembly . 1 BACC10DK10 Clamp 6 BACC10DK6 Clamp 1 1 BACH30BC06-0110 Hose Assembly 4 4 BACR15FT6AD5 Rivet . 3 BACS12GU3-12 Screw . 4 BACS12GU3-40 Screw 1 1 BACT16AY060606W Swivel Tee 1 1 BAC27TFDE534 Marker . 1 MS21905W6 Tee Assembly

Oct 12/95 767-31-0073 12

### BOEING SERVICE BULLETIN 767-31-0073 (Continued) 233T0044 - KIT, EICAS PRESSURE SWITCH INSTALLATION -1 -2 QuantityPart Number Name . 11 NAS1149D0332J Washer . 4 NAS43DD3-45FC Spacer 1 1 1QF2-3-64A Quick Disconnect 1 1 123-2222F Clamp 1 1 6502-10K Pressure Switch 233T9110 - KIT, DRAIN ASSEMBLY -37 QuantityPart Number Name - 233T9110-37 Kit, Drain Assembly 1 MS28778-6 O-Ring 1 1QF2-3-64A Quick Disconnect 1 1QM1-3-69A Quick Disconnect 1 50017A43-6-0070 Hose Assembly Drain 287T0012 - KIT, STRINGER ATTACH ASSEMBLY -3 QuantityPart Number Name - 287T0012-3 Kit, Stringer Attach Assembly 1 287T0012-1 Support Attachment 2 287T0012-2 Strap

Oct 12/95 767-31-0073 13

### BOEING SERVICE BULLETIN 767-31-0073

289T0341 - WIRE KIT -1 -2 -3 -101 -102 -103 Quantity Part Number Name - . . . . . 289T0341-1 Subkit, Wire . - . . . . 289T0341-2 Subkit, Wire . . - . . . 289T0341-3 Subkit, Wire . 1 1 - . . 289T0341-101 Kit, Wire (W0192) . 1 . . - . 289T0341-102 Kit, Wire (W0764) 1 1 1 . . - 289T0341-103 Kit, Wire (W2006) 1 1 1 . . . 289T0341-104 (b) Lacing Tape (white) 1 1 1 . . . 289T0341-105 (c) Lacing Tape (green) 4 4 4 . . . BACS18AR6 Burndy Spacer . . . 1 . . 289T0341-101W Wire ....1.289T0341-102W Wire .... .1289T0341-103W Wire . . . 3 2 BACC47CN1A Pin Contact . . . .25BACC47CP1A Socket Contact . . . 1 . . BACC47ER1 Relay Socket Contact .... .1 BACC45FT10A5S Plug (D20950) .... .1289T0341-10301 Identification Tape .... .1 BACT12AR202 Lug .... .2BACT12AR222 Lug .... .3M39029/11-145 Terminal Block Contact .... .3BACC47DE7 Terminal Block Contact .... .1 BACM15C3B Terminal Block (a) The kit has more parts than are necessary for installation. Discard parts that are not used or keep the parts for spares. (b) Lacing tape 18DZ-A, white, 20 feet (c) Lacing tape 18DZ-A, green, 60 feet 2. Parts and Materials Supplied by the Operator: QuantityPart Number (Specification) Name 2 feet MS20995C20 Lockwire

Oct 12/95 767-31-0073 14

### BOEING SERVICE BULLETIN 767-31-0073 B. Parts Necessary to Change Spares None C. Special Tools and Equipment No special tools or equipment are necessary to do the change in this service bulletin. But, maintenance and overhaul tools in the manuals given in Paragraph I.K., References, can be necessary. Examine operator tool supply to make sure all necessary tools are available. D. Existing Parts Accountability The parts shown below are changed as shown in this service bulletin. Quantity is the number of parts changed on each airplane.

Existing Part Number RUCName QuantityNew Part Number PNCRC 233T9110-1101 DISTube Assembly 1 233T9110-1162 S A 233T9110-1002 or -1047 DISTube Assembly 1 233T9110-1072 S A
RUC Recommended Use Code DIS - Discard the part. PNC Part Number Code S - This is the part number for the new equivalent or replacement part. - To get a new part, use this part number in your order. RC Replacement Code A - Do not use the existing part to replace the new or changed part.

Oct 12/95 767-31-0073 15

### BOEING SERVICE BULLETIN 767-31-0073

BLANK PAGE

Oct 12/95 767-31-0073 16

### BOEING SERVICE BULLETIN 767-31-0073
III. ACCOMPLISHMENT INSTRUCTIONS NOTES: 1. The paragraphs identified with a letter give the general work instructions and the necessary tests. The instructions identified with numbers on the figures give the recommended sequence of steps. 2. Unless shown differently, these dimensions and tolerances are used: - Linear dimensions are in inches - Tolerance on linear dimensions, other than rivet and bolt edge margins, is plus or minus 0.03

inch - Tolerance on rivet and bolt edge margin is plus or minus 0.05 inch - Angular tolerance is plus or minus 2 degrees - Hole dimensions for standard solid rivets are given in 767 Structural Repair Manual Chapter 51 - Torque limits to tighten nuts and bolts are given in 767 Structural Repair Manual Chapter 51. 3. Alternative fasteners are given in 767 Structural Repair Manual Chapter 51. 4. Refer to the Boeing Standard Wiring Practices Manual 20-10-11 and 20-10-12 for the wire installation procedures. 5. Obey all of the warnings and cautions given in the specified manual sections. A. On Group 1-3, 5 and 6-8 airplanes, remove ceiling panel aft of the Electrical/Electronic shelf as specified in the 767 Maintenance Manual 25-52-02. B. Remove the left and right EICAS computers as specified in the 767 Maintenance Manual 31-41-02. C. On Groups 1-3 and 6-8 airplanes: install the EICAS maintenance enable bypass switch as shown in Figure 1. D. Install the altitude pressure switch as shown in Figure 2. E. Install the altitude pressure tubing as follows: - On Groups 1-5 airplanes: use Figure 3. - On Groups 6-10 airplanes: use Figure 4. F. Make a wiring modification and wiring installation as follows: - On Groups 2 and 6 airplanes: use Figure 5 and 7. - On Groups 1, 3, 5, 7 and 8 airplanes: use Figure 5 and 8. - On Group 9 airplanes: use Figure 6 and 7. - On Groups 4 and 10 airplanes: use Figure 6 and 8. G. Install the left and right EICAS computers as specified in the 767 Maintenance Manual 31-41-02. H. On Group 1-3, 5 and 6-8 airplanes, install ceiling panel aft of the Electrical/Electronic shelf as specified in the 767 Maintenance Manual 25-52-02.

Oct 12/95 767-31-0073 17

### BOEING SERVICE BULLETIN 767-31-0073 I. Do the applicable steps: - On Groups 1 - 5 airplanes: flush the auxiliary static system No. 2 and do leak test of the auxiliary

static system No. 2 as specified in the 767 Maintenance Manual 34-11-00. - On Groups 6 - 10 airplanes: flush the auxiliary static system No. 1 and do leak test of the auxiliary

static system No. 1 as specified in the 767 Maintenance Manual 34-11-00. J. Do operational test of the EICAS maintenance enable system as follows: 1. Open these circuit breakers in P11 panel. Circuit Breaker No.Name Location C1170 LDG GR POS AIR/GND SYS 2 U23 or U24 C1175 LDG GR POS AIR/GND SYS 1 C30 C1182 AIR/GND SYS 1 U15 C1575 (if installed) LDG GR POS AIR/GND SYS 2 ALT E19, C21, C27, or C29 2. Push the STATUS switch on P9 EICAS Display Select Panel. 3. Push the TEST switch on EICAS Maintenance Panel located in the P61 Right Side Panel. 4. Make sure that there is no change in the display. 5. Make sure that Maint Enable Bypass switch S612 on E8 EICAS rack is in the NORMAL position. 6. Disconnect connector D20950 from the Altitude Pressure switch S921 on E8 EICAS rack. 7. Install a jumper wire between pins 1 and 2 of connector D20950. 8. Push the CONF/MCDP switch on EICAS Maintenance Panel. 9. Make sure that the CONF/MCDP page shows on the EICAS Lower Display Unit. 10. Remove the jumper wire from connector D20950. 11. Connect connector D20950 to the Altitude Pressure switch S921. 12. Push the STATUS switch on P9 EICAS Display Select Panel. 13. Set Maint Enable Bypass switch S612 to the BYPASS position.

Oct 12/95 767-31-0073 18

### BOEING SERVICE BULLETIN 767-31-0073
14. Push the CONF/MCDP switch on EICAS Maintenance Panel. 15. Make sure that the CONF/MCDP page shows on the EICAS Lower Display Unit. 16. Set Maint Enable Bypass switch S612 to the NORMAL position. 17. Push the STATUS switch on P9 EICAS Display Select Panel. 18. Push the CONF/MCDP switch on EICAS Maintenance Panel. 19. Make sure that there is no change in the display. 20. Close circuit breakers C1170, C1175, C1182, C1575 (if installed). 21. Push the CONF/MCDP switch on EICAS Maintenance Panel. 22. Make sure that the CONF/MCDP page shows on the EICAS Lower Display Unit. K. Put the airplane back into the serviceable configuration.

Oct 12/95 767-31-0073 19

### BOEING SERVICE BULLETIN 767-31-0073
FIGURE TABLE OF CONTENTS Title Page FIGURE 1. EICAS MAINTENANCE ENABLE BYPASS SWITCH INSTALLATION - GROUPS 1-3 AND 6-8 AIRPLANES . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 FIGURE 2. ALTITUDE PRESSURE SWITCH INSTALLATION - ALL AIRPLANES. . . . . 24 FIGURE 3. ALTITUDE PRESSURE TUBING INSTALLATION - GROUPS 1-5 AIRPLANES . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 FIGURE 4. ALTITUDE PRESSURE TUBING INSTALLATION - GROUPS 6-10 AIRPLANES . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 FIGURE 5. WIRING MODIFICATION - GROUPS 1-3, 5 AND 6-8 AIRPLANES . .. . . . . 38 FIGURE 6. WIRING MODIFICATION - GROUPS 4, 9 AND 10 AIRPLANES. . . . . . . . . . 41 FIGURE 7. WIRING INSTALLATION - GROUPS 2, 6, AND 9 AIRPLANES. . . . . . . . . . 43 FIGURE 8. WIRING INSTALLATION - GROUPS 1, 3-5, 7, 8 AND 10 AIRPLANES. . . . 47

Oct 12/95 767-31-0073 20

### BOEING SERVICE BULLETIN 767-31-0073



### 266.5

STA FWD

RACK E8 EICAS MAIN EQUIPMENT CENTER

B B A

A FWD UP
INBDR41408

FIGURE 1. EICAS MAINTENANCE ENABLE BYPASS SWITCH INSTALLATION - GROUPS 1-3 AND 6-8 AIRPLANES Oct 12/95 SHEET 1 OF 3 767-31-0073 21

### BOEING SERVICE BULLETIN 767-31-0073



### 7 9

3 3 8 7 2

5 3 4 1 6 S612



### (4 LOCATIONS)

UP FWD 

## VIEW C-C

266.5

STA (2 LOCATIONS)

0.60
5.30 7.10UP FWD 

## VIEW B-B STA 266.5 

## VIEW A-A UP INBD LBL 53.07

0.32

4.00

3.30 0.80BYPASSNORMAL EICAS MAINT ENABLE BYPASS



### C CR41472

-
FIGURE 1. EICAS MAINTENANCE ENABLE BYPASS SWITCH INSTALLATION - GROUPS 1-3 AND 6-8 AIRPLANES Oct 12/95 SHEET 2 OF 3 767-31-0073 22

### BOEING SERVICE BULLETIN 767-31-0073 The step numbers shown below agree with the numbers shown in the circle symbols in the figure.

STEP TASK NAME PART NUMBER QTY NOTES 1 Install Bracket 284T1038-4 1 - 2 Install Rivet BACR15FT5AD4 2 - 3 Install Switch ITL187-3 1 - Switch Guard 405-112 1 4 Install Lockwire MS20995C20 - With switch lever in the OFF position. Use double twist method as specified in the BSOPM 20-50-02 5 Install Marker BAC27TEX3095 1 - 6 Install Marker BAC27TEX2962 1 - 7 Install Nutplate BACN10TL3-4 3 - 8 Install Rivet BACR15BB4AD5 2 - 9 Install Rivet NAS1398D4-3 4 -

FIGURE 1. EICAS MAINTENANCE ENABLE BYPASS SWITCH INSTALLATION - GROUPS 1-3 AND 6-8 AIRPLANES Oct 12/95 SHEET 3 OF 3 767-31-0073 23

### BOEING SERVICE BULLETIN 767-31-0073



### SEE DETAIL II

SEE DETAIL I FWD

STA 266.5 MAIN EQUIPMENT CENTER

INBD UP FWDR41478

FIGURE 2. ALTITUDE PRESSURE SWITCH INSTALLATION - ALL AIRPLANES Oct 12/95 SHEET 1 OF 5 767-31-0073 24

### BOEING SERVICE BULLETIN 767-31-0073



### 4 266.5

STA



## DETAIL IA A

FWD UP
INBDR41506

FIGURE 2. ALTITUDE PRESSURE SWITCH INSTALLATION - ALL AIRPLANES Oct 12/95 SHEET 2 OF 5 767-31-0073 25

### BOEING SERVICE BULLETIN 767-31-0073



### 2

1

3 0.58 3.42 (4 LOCATIONS)



## VIEW A-A S921 PRESSURE SW



### UP FWDR55431

FIGURE 2. ALTITUDE PRESSURE SWITCH INSTALLATION - ALL AIRPLANES Oct 12/95 SHEET 3 OF 5 767-31-0073 26

### BOEING SERVICE BULLETIN 767-31-0073



## 1.00 5 7 6

8 FWD UP


## VIEW B-B DETAIL II

6.000.26 (2 LOCATIONS)

(2 LOCATIONS) FWD UP B

BR41543

FIGURE 2. ALTITUDE PRESSURE SWITCH INSTALLATION - ALL AIRPLANES Oct 12/95 SHEET 4 OF 5 767-31-0073 27

### BOEING SERVICE BULLETIN 767-31-0073 The step numbers shown below agree with the numbers shown in the circle symbols in the figure.

STEP TASK NAME PART NUMBER QTY NOTES 1 Install Bracket 233T9118-105 1 - 2 Install Rivet BACR15FT6AD5 4 - 3 Install Marker BAC27TFDE534 1 - 4 Install Pressure Switch 6502-10K 1 - Clamp 123-2222F 1 5 Install Nutplate BACN10GH3-6 1 - 6 Install Nutplate BACN10TL3-3 1 - 7 Drill Hole - - - Do 100 Degrees Countersink - - On the other side (inboard side). Refer to 767 SRM 51-70-16. Install Rivet BACR15BA3AD3 2 Rivet head is installed on the other side. 8 Install Rivet BACR15DR3P2 2 Get rivet from kit 015T1461-9.

FIGURE 2. ALTITUDE PRESSURE SWITCH INSTALLATION - ALL AIRPLANES Oct 12/95 SHEET 5 OF 5 767-31-0073 28

### BOEING SERVICE BULLETIN 767-31-0073



### SEE DETAIL I FWD

STA 266.5 MAIN EQUIPMENT CENTER

INBD UP FWDR41626

FIGURE 3. ALTITUDE PRESSURE TUBING INSTALLATION - GROUPS 1-5 AIRPLANES Oct 12/95 SHEET 1 OF 3 767-31-0073 29

### BOEING SERVICE BULLETIN 767-31-0073

7 1 266.5

STA

6 5 3 24

STRINGER 27L STRINGER 26L

DRAIN AUXILIARY STATIC NO.2



## DETAIL I FWD UP
INBDR41711

FIGURE 3. ALTITUDE PRESSURE TUBING INSTALLATION - GROUPS 1-5 AIRPLANES Oct 12/95 SHEET 2 OF 3 767-31-0073 30

### BOEING SERVICE BULLETIN 767-31-0073 The step numbers shown below agree with the numbers shown in the circle symbols in the figure.

STEP TASK NAME PART NUMBER QTY NOTES 1 Remove / Keep Screw - - - Clamp - - 2 Remove Tube Assembly 233T9110-1101 1 - 3 Install Tee BACT16AY060606W 1 Tighten fittings with torque range of 165 to 175 inch-pounds. 4 Install Tube Assembly 233T9110-1162 1 Tighten fittings with torque range of 165 to 175 inch-pounds. 5 Install Hose Assembly BACH30BC06-0110 1 Tighten fittings with torque range of 165 to 175 inch-pounds. 6 Install Quick Disconnect 1QF2-3-64A 1 - 1QM1-3-54A 1 This quick disconnect should be installed to the pressure switch. Get the quick disconnect from kit 015T1461-9. 7 Install Clamp (kept) - - - Screw (kept) - -

FIGURE 3. ALTITUDE PRESSURE TUBING INSTALLATION - GROUPS 1-5 AIRPLANES Oct 12/95 SHEET 3 OF 3 767-31-0073 31

### BOEING SERVICE BULLETIN 767-31-0073



### DETAILS I AND II SEE 212.5
228.5
246 STA STA

266.5

STA STA FWDMAIN EQUIPMENT CENTER

FWD UP
INBDR41750

FIGURE 4. ALTITUDE PRESSURE TUBING INSTALLATION - GROUPS 6-10 AIRPLANES Oct 12/95 SHEET 1 OF 6 767-31-0073 32

### BOEING SERVICE BULLETIN 767-31-0073



### 14 6 78

1 1

3 5 912

10

2 11

S-26L

S-27L S-24L



## DETAIL I STA 266.5 STA 246

(2 LOCATIONS) SEE DETAIL IV DETAIL II CONTINUED ON

SEE DETAIL III FWD UP
INBDR42185

FIGURE 4. ALTITUDE PRESSURE TUBING INSTALLATION - GROUPS 6-10 AIRPLANES Oct 12/95 SHEET 2 OF 6 767-31-0073 33

### BOEING SERVICE BULLETIN 767-31-0073

912

15 17 13 16

1418 212.5

STA 228.5 STA

(2 LOCATIONS) SEE DETAIL IV

FROM DETAIL I CONTINUED

NO.1 DRAIN AUXILIARY STATIC 

## DETAIL II FWD UP
INBDR42209

FIGURE 4. ALTITUDE PRESSURE TUBING INSTALLATION - GROUPS 6-10 AIRPLANES Oct 12/95 SHEET 3 OF 6 767-31-0073 34

### BOEING SERVICE BULLETIN 767-31-0073



## DETAIL III DRAIN HOSE ASSEMBLY O-RING DISCONNECT QUICK TUBE ASSEMBLY

EXISTING CLAMP SPACER SCREW



## DETAIL IV EXISTING SPACER WASHER CLAMPR42242

FIGURE 4. ALTITUDE PRESSURE TUBING INSTALLATION - GROUPS 6-10 AIRPLANES Oct 12/95 SHEET 4 OF 6 767-31-0073 35

### BOEING SERVICE BULLETIN 767-31-0073 The step numbers shown below agree with the numbers shown in the circle symbols in the figure.

STEP TASK NAME PART NUMBER QTY NOTES 1 Remove / Keep Screw - - Do not remove clamp from tube assembly. Washer - - 2 Install Hose Drain Assembly 50017A43-6-0070 1 - O-Ring MS28778-6 1 Quick Disconnect 1QF2-3-64A 1 1QM1-3-69A 1 3 Install Tube Assembly 233T9110-1075 1 Tighten fittings with torque range of 165 to 175 inch-pounds. 4 Install Clamp BACC10DK10 1 Install stringer attach assembly 287T0012-3 if necessary. Use Screw (kept) - - Washer (kept) - - 5 Install Clamp BACC10DK6 1 - Use Screw (kept) - - Washer (kept) - - 6 Install Tee Assembly MS21905W6 1 - 7 Install Hose Assembly BACH30BC06-0110 1 Tighten fittings with torque range of 165 to 175 inch-pounds. 8 Install Quick Disconnect 1QF2-3-64A 1 - 1QM1-3-54A This quick disconnect should be installed to the pressure switch. Get the quick disconnect from kit 015T1461-9. 9 Remove Screw - - Keep spacer. Do not remove clamp from tube assembly. Spacer - - 10 Install Tube Assembly 233T9110-1074 1 Tighten fittings with torque range of 165 to 175 inch-pounds. 11 Install Clamp BACC10DK6 1 - Use Screw (kept) - - Washer (kept) - - 12 Install Clamp BACC10DK6 3 - Use Screw BACS12GU3-40 3 Washer NAS1149D0332J 3 Spacer NAS43DD3-45FC 3 Spacer (kept) - - 13 Install Tube Assembly 233T9110-1073 1 Tighten fittings with torque range of 165 to 175 inch-pounds.
FIGURE 4. ALTITUDE PRESSURE TUBING INSTALLATION - GROUPS 6-10 AIRPLANES Oct 12/95 SHEET 5 OF 6 767-31-0073 36

### BOEING SERVICE BULLETIN 767-31-0073 (Continued) STEP TASK NAME PART NUMBER QTY NOTES

14 Remove / Keep Screw - - Clamp - - From tube assembly 233T9110-1002 or -1047. Do not remove clamp from other tube assembly. 15 Remove Tube Assembly 233T9110-1002 or -1047 1 - 16 Install Tube Assembly 233T9110-1072 1 Tighten fittings with torque range of 165 to 175 inch-pounds. 17 Install Tee Assembly BACT16AY060606W 1 Tighten fittings with torque range of 165 to 175 inch-pounds. 18 Install Clamp (kept) - - - Use Screw (kept) - - -

FIGURE 4. ALTITUDE PRESSURE TUBING INSTALLATION - GROUPS 6-10 AIRPLANES Oct 12/95 SHEET 6 OF 6 767-31-0073 37

### BOEING SERVICE BULLETIN 767-31-0073



### ADDED WIRE OR NEW ROUTING EXISTING WIRE DELETED WIRE OR FORMER ROUTING 1 2

11 12 10 10 3 2

7 3

9 4 8

5

6 5

77

3 2 (3 LOCATIONS) (3 LOCATIONS)



### SWITCH BYPASS ENABLE MAINT EICAS S612 11 9 10 K202 SYS 2 AIR/GND RLY D3688 012-24 01J-24 01J-24 NC 27 W768 J D5316P POS 34

P37 RIGHT MISCELLANEOUS ELECTRICAL W764-077-24 W764-076-24 AE0218

D5328P POS 36 J

AE0221 8 9 J D6256P POS 5 YC45 TB239 008-24 014-24 1 012-24 2 3 NC 10K FT 5 011-20

013-20GD171-DC

D20950 S921 ALTITUDE PRESSURE SWITCH

2 NORMAL BYPASS 009-24 020-20 GD171-S

GD171-DC 3 1 

# W192

W2006

E8 EICAS RACKR41287 REFERENCE: 767 WIRING DIAGRAM 31-41-13 FIGURE 5. WIRING MODIFICATION - GROUPS 1-3, 5 AND 6-8 AIRPLANES Oct 12/95 SHEET 1 OF 3 767-31-0073 38

### BOEING SERVICE BULLETIN 767-31-0073 The flag note numbers shown below agree with the numbers shown in the flag symbols in the figure.

FLAG NOTE NAME PART NUMBER QTY NOTES 1 Relay Socket Contact BACC47ER1 1 - 2 Pin Contact BACC47CN1A 4 - 3 Socket Contact BACC47CP1A 7 - 4 Terminal Block Contact M39029/11-145 3 - 5 Lug BACT12AR222 2 - 6 Lug BACT12AR202 1 - 7 Terminal Block Contact BACC47DE7 3 - 8 Plug BACC45FT10A5S 1 Cable Clamp - - The cable clamp is included with the plug. Identification Tape 289T0341-10301 1 - 9 Terminal Block BACM15C3B 1 Terminal block may already install on some airplanes. Spacer BACS18AR6 4 As required to obtain position 45 and 46 on some airplanes. 10 - - - Existing spare wires for airplanes VB401, VE101-VE104, VE116-VE118, VE121-VE126, VE141-VE152, VF001-VF002, VF041-VF042, VF051, VF171-VF172, VF180, VL701-VL703, VN751-VN753. 11 - - - See Pin Data Table for pin number. 12 - - - See Pin Data Table for pin number.

FIGURE 5. WIRING MODIFICATION - GROUPS 1-3, 5 AND 6-8 AIRPLANES Oct 12/95 SHEET 2 OF 3 767-31-0073 39

### BOEING SERVICE BULLETIN 767-31-0073

PIN DATA TABLE Airplanes Pin Number for Flag note 11 Pin Number for Flag note 12 Group 1:VF091-VF093, VF101-VF102, VF161-VF162, VN001-VN041, VN171-VN173, VN211-VN212, VN242-VN243, VN291-VN292, VN301-VN314, VN371-VN372, VN376, VN381-VN388, VN491-VN513, VN531-VN532, VN536-VN537, VN541-VN542, VN551, VN556-VN557, VN561-VN562, VN676, VN971 VL001-VL006, VL011 8 9

Group 7:VE171-VE172, VK161-VK164, VK171 Group 7 VE083-VE086 15 26 Group 1:VF061-VF062, VN051-VN064, VN081-VN095, VN191-VN196, VN231-VN234, VN421-VN425, VN546-VN547, VN631-VN638, VN651-VN656, VN791-VN792, VN951-VN952 15 16
Group 3:VF171-VF172, VF180, VL701-VL703, VN751-VN753 Group 5:VN921-VN922 Group 7 VB325-VB332, VB441-VB444, VK012-VK015, VK081-VK112, VK131-VK133, VK141-VK144 Group 3:VF001-VF002, VF041-VF042, VF051 15 19 Group 6:VA001-VA020, VA501-VA515, VA701-VA712, VB001-VB002, VB051-VB055, VB101-VB121, VB201-VB202, VB251-VB253, VB281-VB284, VB301-VB302, VB321-VB324, VB371-VB373, VE001-VE002, VE021-VE023, VE041-VE043, VE061-VE068, VE101-VE104, VK001 Group 7:VA516-VA530, VA713-VA719, VB122-VB125, VE003, VE069, VK001-VK011, VK021-VK022 Group 8:VB401, VE116-VE118, VE121-VE126, VE141-VE152 Group 1:VN111-VN127, VN130-VN135 47 48

FIGURE 5. WIRING MODIFICATION - GROUPS 1-3, 5 AND 6-8 AIRPLANES Oct 12/95 SHEET 3 OF 3 767-31-0073 40

### BOEING SERVICE BULLETIN 767-31-0073



### DELETED WIRE OR FORMER ROUTING EXISTING WIRE ADDED WIRE OR NEW ROUTING 1 (3 LOCATIONS)

(3 LOCATIONS) 2 5 3 4 1 2



### GD171-DC W764 J POS 5 D6256P AE0221 8 008-24

E8 EICAS RACK S612 EICAS MAINT ENABLE BYPASS SWITCHBYPASS NORMAL 009-24 1 3 020-20 2 9 TB239 

# W2006

GD171-S

PRESSURE SWITCH S921 ALTITUDE D20950 GD171-DC

013-20 011-20

5 FT 10K NC 3 2 012-24 1

014-24 YC45R41288 REFERENCE: 767 WIRING DIAGRAM 31-41-13

FIGURE 6. WIRING MODIFICATION - GROUPS 4, 9 AND 10 AIRPLANES Oct 12/95 SHEET 1 OF 2 767-31-0073 41

### BOEING SERVICE BULLETIN 767-31-0073 The flag note numbers shown below agree with the numbers shown in the flag symbols in the figure.

FLAG NOTE NAME PART NUMBER QTY NOTES 1 Socket Contact BACC47CP1A 4 - 2 Terminal Block Contact BACC47DE7 2 - 3 Terminal Block Contact M39029/11-145 3 - 4 Terminal Block BACM15C3B 1 Terminal block may already install on some airplanes. Spacer BACS18AR6 4 As required to obtain position 45 and 46 on some airplanes. 5 Plug BACC45FT10A5S 1 - Cable Clamp - - The cable clamp is included with the plug. Identification Tape 289T0341-10301 1 - 

### ADDED WIRE OR NEW ROUTING EXISTING WIRE DELETED WIRE OR FORMER ROUTING989752

FIGURE 6. WIRING MODIFICATION - GROUPS 4, 9 AND 10 AIRPLANES Oct 12/95 SHEET 2 OF 2 767-31-0073 42

### BOEING SERVICE BULLETIN 767-31-0073



### 6

FWD SEE DETAIL I AND II E8 RACK P37 PANEL W764

MAIN EQUIPMENT CENTERR42264

FIGURE 7. WIRING INSTALLATION - GROUPS 2, 6, AND 9 AIRPLANES Oct 12/95 SHEET 1 OF 4 767-31-0073 43

### BOEING SERVICE BULLETIN 767-31-0073



### 12 2 1 2

FWD UP TB239 EICAS MAINT ENABLE BYPASS SWITCH

CONTINUED TO DETAIL II GROUND BLOCK GD171

W2006
W2006 TERMINAL BLOCK



## DETAIL I (E8 RACK) CONNECTOR D6256J AE0221R42420

FIGURE 7. WIRING INSTALLATION - GROUPS 2, 6, AND 9 AIRPLANES Oct 12/95 SHEET 2 OF 4 767-31-0073 44

### BOEING SERVICE BULLETIN 767-31-0073



### 5 3 4



## DETAIL II UP
FWD DETAIL I CONTINUED FROM

W2006R42442

FIGURE 7. WIRING INSTALLATION - GROUPS 2, 6, AND 9 AIRPLANES Oct 12/95 SHEET 3 OF 4 767-31-0073 45

### BOEING SERVICE BULLETIN 767-31-0073 The step numbers shown below agree with the numbers shown in the circle symbols in the figure.

STEP TASK NAME PART NUMBER QTY NOTES 1 Route Wire - - From EICAS enable switch S612 to terminal block TB139, ground block GD171, and connector D6256J. New wires should be routed with white color tie bundle. On Groups 2 and 6 airplanes only.

Use Lacing Tape 289T0341-104 - 2 Install Clamp BACC10DK2 3 - Use Screw NAS1801-3-7 3 - Washer NAS1149D0332J 3 3 Route Wire - - From altitude pressure switch S921 to ground block GD171 and terminal block TB139 and from terminal block TB139 to connector D6256J. New wires should be routed with white color tie bundle. Use Lacing Tape 289T0341-104 - 4 Install Clamp BACC10DK2 1 - Use Filler BACP20BA1 1 - Screw NAS1801-3-7 1 Washer NAS1149D0332J 1 5 Install Clamp BACC10DK2 1 - Use Filler BACP20BA1 1 - Screw NAS1801-3-26 1 Washer NAS1149D0332J 1 Spacer NAS42DD-6-80 1 6 Route Wire - - From E8 rack to P37 panel with the existing wire bundle routing. New wires should be routed with green color tie bundle. Use Lacing Tape 289T0341-105 - 7 Route Wire - - In P37 panel with the existing wore bundle routing. New wires should be routed with green color tie bundle. On Groups 2 and 6 airplanes only. Use Lacing Tape 289T0341-105

FIGURE 7. WIRING INSTALLATION - GROUPS 2, 6, AND 9 AIRPLANES Oct 12/95 SHEET 4 OF 4 767-31-0073 46

### BOEING SERVICE BULLETIN 767-31-0073



### 6

P37 PANEL

E8 RACK SEE DETAIL I AND II FWD MAIN EQUIPMENT CENTERR42447

FIGURE 8. WIRING INSTALLATION - GROUPS 1, 3-5, 7, 8 AND 10 AIRPLANES Oct 12/95 SHEET 1 OF 4 767-31-0073 47

### BOEING SERVICE BULLETIN 767-31-0073



### FWD UP 2 1 2



## (E8 RACK) DETAIL I W2006 SWITCH ENABLE BYPASS EICAS MAINT

D6256J CONNECTOR GROUND BLOCK GD171

BLOCK TB239 TERMINAL TO DETAIL II CONTINUEDR42615

FIGURE 8. WIRING INSTALLATION - GROUPS 1, 3-5, 7, 8 AND 10 AIRPLANES Oct 12/95 SHEET 2 OF 4 767-31-0073 48

### BOEING SERVICE BULLETIN 767-31-0073



### 5 3 4 DETAIL I CONTINUED FROM



## DETAIL II UP
FWD CONNECTOR D20950R42621

FIGURE 8. WIRING INSTALLATION - GROUPS 1, 3-5, 7, 8 AND 10 AIRPLANES Oct 12/95 SHEET 3 OF 4 767-31-0073 49

### BOEING SERVICE BULLETIN 767-31-0073 The step numbers shown below agree with the numbers shown in the circle symbols in the figure.

STEP TASK NAME PART NUMBER QTY NOTES 1 Route Wire - - From EICAS enable switch S612 to terminal block TB139, ground block GD171, and connector D6256J. New wires should be routed with white color tie bundle. On Groups 1, 3 , 5 , 7 and 8 airplanes only. Use Lacing Tape 289T0341-104 - 2 Install Clamp BACC10DK2 3 - Use Screw NAS1801-3-7 3 - Washer NAS1149D0332J 3 3 Route Wire - - From altitude pressure switch S921 to ground block GD171 and terminal block TB139 and from terminal block TB139 to connector D6256J. New wires should be routed with green color tie bundle. Use Lacing Tape 289T0341-105 - 4 Install Clamp BACC10DK2 1 - Use Filler BACP20BA1 1 - Screw NAS1801-3-7 1 Washer NAS1149D0332J 1 5 Install Clamp BACC10DK2 1 - Filler BACP20BA1 1 - Screw NAS1801-3-26 1 Washer NAS1149D0332J 1 Spacer NAS42DD-6-80 1 6 Route Wire - - From E8 rack to P37 panel with the existing wire bundle routing. New wires should be routed with green color tie bundle. On Groups 3 and 8 airplanes only. Use Lacing Tape 289T0341-105 7 Route Wire - - In P37 panel with the existing wire bundle routing. New wires should be routed with green color tie bundle.On Groups 1, 3, 5, 7 and 8 airplanes only. Use Lacing Tape 289T0341-105

FIGURE 8. WIRING INSTALLATION - GROUPS 1, 3-5, 7, 8 AND 10 AIRPLANES Oct 12/95 SHEET 4 OF 4 767-31-0073 50

### Commercial Airplane Group 

# 767 Service Bulletin
Number: 767-31-0073 

## Evaluation Form Date: October 12, 1995 ATA System: 3141 Prepared By: Tuan Lam

SUBJECT:INDICATING/RECORDING SYSTEMS - CENTRAL COMPUTERS - INFLIGHT EICAS MAINTENANCE DATA SELECTION SYSTEM INSTALLATION Use this evaluation form to tell us what you think of the quality of this service bulletin. We will use the data that you give us to improve the quality of our service bulletins. Please include data about these or other items:- Did this service bulletin meet your estimate of quality? - How easy is this service bulletin to understand? - Are the Planning Information, Material Information and Accomplishment Instructions satisfactory? - Will you do this service bulletin fully? If not, please tell us why. - Is the Manpower estimate satisfactory? NOTE: Please do not use this evaluation form to tell us to make changes to your manuals. To make these changes, please use a Publication Change Request (PCR) form. Please give us this data: OPERATOR: TODAY'S DATE: PREPARED BY: TITLE: ORGANIZATION: TELEX CODE: TELEPHONE NUMBER: BASE: COMMENTS:

If necessary, please use the other side. Thank you for the time you used to give us your comments. Give the completed evaluation form to your Boeing Field Service Representative or send the evaluation form directly to this address: T.J. Taylor, Manager Service Bulletin Engineering Boeing Commercial Airplane Group P.O. Box 3707, Mail Stop 20-85 Seattle, WA 98124-2207

BOEING COMMERCIAL AIRPLANE GROUP P.O. BOX 3707 SEATTLE, WASHINGTON 98124-2207